Atlas CPAs & Advisors, an ATLAS Navigators LLC Firm Share: Accountants/CPAs Atlas CPAs & Advisors, an ATLAS Navigators LLC Firm Visit Website Request Info 916 S. Main St., Ste. 202 Longmont, CO 80501 303-678-5392 303-678-5434 (fax) atlasfirms.com About Map About ATLAS CPAs & Advisors, an ATLAS Navigators LLC firm offers tax, accounting and business consulting services, and compliance audits for federal awardees. What's Nearby? Distance: 5 10 15 20 25 50 mi.